The Internet




The internet is essentially many networks connected together. Users then connect to the internet using either dial-up networking or newer digital technologies. In either case, these services are provided by an Internet Service Provider(ISP). The ISP also will assign your computer a unique IP address and provide email and Newsgroup services.
  • Root Level Domains - The top of the tree.
  • Top Level Domains - These are divided into different categories. Com, net, mil, edu, org and gov are the most common.
  • Second Level Domains - These domains make up the rest of networks as all sub-domains are categorized under this heading. So if you visit Intel's site, you are visiting the sub-domain intel.com. Within intel.com many other sub-domains may also exist.
  • Hosts - Hosts are the final level in the hierarchy as they are the individual computers that occupy or comprise a domain and are where the web pages are located.
IP addresses are resolved to domain names using DNS as previously discussed

Post a Comment

0 Comments